Re: [E1000-devel] questions on ixgbe and 10G performance expectations

2014-02-19 Thread Keller, Jacob E
nd 10G performance > expectations > > > -Original Message- > > From: John-Paul Robinson [mailto:j...@uab.edu] > > Sent: Tuesday, February 18, 2014 2:59 PM > > To: Brandeburg, Jesse > > Cc: e1000-devel@lists.sourceforge.net > > Subject: Re: [E1000-devel] questi

Re: [E1000-devel] questions on ixgbe and 10G performance expectations

2014-02-19 Thread Ben Greear
On 02/19/2014 02:38 PM, John-Paul Robinson wrote: > On 02/17/2014 07:10 PM, Ben Greear wrote: >> First, check 'dmesg' and make sure your NICs are using at least >> x8 pci with 5GT/s. > > I checked dmesg and my system reports that the Intel card is on x8 pci > with 5GT/s. > >> >> Check BIOS and di

Re: [E1000-devel] questions on ixgbe and 10G performance expectations

2014-02-19 Thread John-Paul Robinson
On 02/17/2014 07:10 PM, Ben Greear wrote: > First, check 'dmesg' and make sure your NICs are using at least > x8 pci with 5GT/s. I checked dmesg and my system reports that the Intel card is on x8 pci with 5GT/s. > > Check BIOS and disable 'VT-d' if it is on...it hurts performance by > 50% or so.

Re: [E1000-devel] questions on ixgbe and 10G performance expectations

2014-02-19 Thread John-Paul Robinson
On 02/18/2014 07:45 PM, Skidmore, Donald C wrote: >> -Original Message- >> From: John-Paul Robinson [mailto:j...@uab.edu] >> Sent: Tuesday, February 18, 2014 2:59 PM >> To: Brandeburg, Jesse >> Cc: e1000-devel@lists.sourceforge.net >> Subject: Re: [E10

Re: [E1000-devel] questions on ixgbe and 10G performance expectations

2014-02-18 Thread Skidmore, Donald C
> -Original Message- > From: John-Paul Robinson [mailto:j...@uab.edu] > Sent: Tuesday, February 18, 2014 2:59 PM > To: Brandeburg, Jesse > Cc: e1000-devel@lists.sourceforge.net > Subject: Re: [E1000-devel] questions on ixgbe and 10G performance > expectations >

Re: [E1000-devel] questions on ixgbe and 10G performance expectations

2014-02-18 Thread John-Paul Robinson
On 02/17/2014 08:19 PM, Brandeburg, Jesse wrote: > Forgive my top post. > > With the new kernel you may be running into needing faster cleanup to > increase tx speed. try increasing the interrupt rate via ethtool -C ethX > rx-usecs 10, yes I said rx because there is only one rate control for th

Re: [E1000-devel] questions on ixgbe and 10G performance expectations

2014-02-18 Thread Brandeburg, Jesse
Forgive my top post. With the new kernel you may be running into needing faster cleanup to increase tx speed. try increasing the interrupt rate via ethtool -C ethX rx-usecs 10, yes I said rx because there is only one rate control for the interrupt. You can easily do line rate tx with 82599. T

Re: [E1000-devel] questions on ixgbe and 10G performance expectations

2014-02-17 Thread Ben Greear
On 02/17/2014 02:19 PM, John-Paul Robinson wrote: > Hi, > > I don't know if this topic is appropriate here, please direct me to a > better place if not. > > I've been spending considerable time trying to measure the performance > of our 10G fabric that uses Intel X520 cards. The primary test mac

[E1000-devel] questions on ixgbe and 10G performance expectations

2014-02-17 Thread John-Paul Robinson
Hi, I don't know if this topic is appropriate here, please direct me to a better place if not. I've been spending considerable time trying to measure the performance of our 10G fabric that uses Intel X520 cards. The primary test machine has dual Intel(R) Xeon(R) CPU E5-2650 0 @ 2.00GHz chip 8-co